How to change innertext of an xml file

Chantal Decraie

Hi,

Now that I can read my xml-file from my richtextbox I would like to change some innertext in the childnodes and whatch the changes in my richtextbox. How should I do this please? Because my code isn't working.

//Read selected file.

XmlDocument doc = new XmlDocument();

doc.LoadXml(richTextBox1.Text);

XmlNodeList nodeList = doc.DocumentElement.SelectNodes("/AnXMLTestFile/"); //<== error message "Expression must evaluate to a node-set."

//find the node to change the content

//if node is not present, do nothing

foreach (XmlNode xNode in nodeList)

{

if (xNode.ParentNode.Attributes["HeaderBEDocument"].Value != "")

{

doc.SelectSingleNode("Identification").InnerText = "string";

doc.SelectSingleNode("SCI").InnerText = "string";

doc.SelectSingleNode("ReferenceType").InnerText = "string";

doc.SelectSingleNode("CCType").InnerText = "AA";

}

else { } //do nothing

}

Can someone help me please?

Thanks in advance.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Chantal Decraie9y ago
hello Sandip,
Thanks for your answer but could you ellaborate please? What would 'tempNode' be? How do you declare it?
where is the totalNode pointing to? The root element, the childelement or the word I'm searching for to change? where do totalPayments come from?

my xml looks like this:

45071dc8-558d-439a-8f0a-88ae73a74910
386
2016-06-14T12:31:58.0+01:00

1234567890123

1234567890123

1234567890123

1234567890123

02-02.001

thanks already.
Sandip G Patil9y ago
You can use like it

XmlDocument retXmlDoc = new XmlDocument();

XmlNode totalNode = retXmlDoc.SelectSingleNode("//Total");
tempNode = totalNode.AppendChild(retXmlDoc.CreateElement("Amount"));
tempNode.InnerText = totalPayments.ToString("C");